World Health Organization. Ageing and Life Course Unit & ebrary, Inc. (2008). WHO global report on falls prevention in older age. World Health Organization.
Chicago Style (17th ed.) ZitazioaWorld Health Organization. Ageing and Life Course Unit eta Inc ebrary. WHO Global Report on Falls Prevention in Older Age. Geneva, Switzerland: World Health Organization, 2008.
MLA (9th ed.) ZitazioaWorld Health Organization. Ageing and Life Course Unit eta Inc ebrary. WHO Global Report on Falls Prevention in Older Age. World Health Organization, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.